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- Kernel driver mc13783-adc
- =========================
- Supported chips:
- * Freescale Atlas MC13783
- Prefix: 'mc13783'
- Datasheet: http://www.freescale.com/files/rf_if/doc/data_sheet/MC13783.pdf?fsrch=1
- * Freescale Atlas MC13892
- Prefix: 'mc13892'
- Datasheet: http://cache.freescale.com/files/analog/doc/data_sheet/MC13892.pdf?fsrch=1&sr=1
- Authors:
- Sascha Hauer <s.hauer@pengutronix.de>
- Luotao Fu <l.fu@pengutronix.de>
- Description
- -----------
- The Freescale MC13783 and MC13892 are Power Management and Audio Circuits.
- Among other things they contain a 10-bit A/D converter. The converter has 16
- (MC13783) resp. 12 (MC13892) channels which can be used in different modes. The
- A/D converter has a resolution of 2.25mV.
- Some channels can be used as General Purpose inputs or in a dedicated mode with
- a chip internal scaling applied .
- Currently the driver only supports the Application Supply channel (BP / BPSNS),
- the General Purpose inputs and touchscreen.
- See the following tables for the meaning of the different channels and their
- chip internal scaling:
- MC13783:
- Channel Signal Input Range Scaling
- -------------------------------------------------------------------------------
- 0 Battery Voltage (BATT) 2.50 - 4.65V -2.40V
- 1 Battery Current (BATT - BATTISNS) -50 - 50 mV x20
- 2 Application Supply (BP) 2.50 - 4.65V -2.40V
- 3 Charger Voltage (CHRGRAW) 0 - 10V / /5
- 0 - 20V /10
- 4 Charger Current (CHRGISNSP-CHRGISNSN) -0.25 - 0.25V x4
- 5 General Purpose ADIN5 / Battery Pack Thermistor 0 - 2.30V No
- 6 General Purpose ADIN6 / Backup Voltage (LICELL) 0 - 2.30V / No /
- 1.50 - 3.50V -1.20V
- 7 General Purpose ADIN7 / UID / Die Temperature 0 - 2.30V / No /
- 0 - 2.55V / x0.9 / No
- 8 General Purpose ADIN8 0 - 2.30V No
- 9 General Purpose ADIN9 0 - 2.30V No
- 10 General Purpose ADIN10 0 - 2.30V No
- 11 General Purpose ADIN11 0 - 2.30V No
- 12 General Purpose TSX1 / Touchscreen X-plate 1 0 - 2.30V No
- 13 General Purpose TSX2 / Touchscreen X-plate 2 0 - 2.30V No
- 14 General Purpose TSY1 / Touchscreen Y-plate 1 0 - 2.30V No
- 15 General Purpose TSY2 / Touchscreen Y-plate 2 0 - 2.30V No
- MC13892:
- Channel Signal Input Range Scaling
- -------------------------------------------------------------------------------
- 0 Battery Voltage (BATT) 0 - 4.8V /2
- 1 Battery Current (BATT - BATTISNSCC) -60 - 60 mV x20
- 2 Application Supply (BPSNS) 0 - 4.8V /2
- 3 Charger Voltage (CHRGRAW) 0 - 12V / /5
- 0 - 20V /10
- 4 Charger Current (CHRGISNS-BPSNS) / -0.3 - 0.3V / x4 /
- Touchscreen X-plate 1 0 - 2.4V No
- 5 General Purpose ADIN5 / Battery Pack Thermistor 0 - 2.4V No
- 6 General Purpose ADIN6 / Backup Voltage (LICELL) 0 - 2.4V / No
- Backup Voltage (LICELL) 0 - 3.6V x2/3
- 7 General Purpose ADIN7 / UID / Die Temperature 0 - 2.4V / No /
- 0 - 4.8V /2
- 12 General Purpose TSX1 / Touchscreen X-plate 1 0 - 2.4V No
- 13 General Purpose TSX2 / Touchscreen X-plate 2 0 - 2.4V No
- 14 General Purpose TSY1 / Touchscreen Y-plate 1 0 - 2.4V No
- 15 General Purpose TSY2 / Touchscreen Y-plate 2 0 - 2.4V No
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